kernel/linux.git/drivers/gpu/drm/stm, branch v4.18.14

drm/stm: ltdc: fix warnings in ltdc_plane_create()

2018-04-27T09:02:58+00:00

"make C=1" returns 2 warnings in ltdc_plane_create() ("Using plain integer as NULL pointer"). This patch fixes them. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Link: https://patchwork.freedesktop.org/patch/msgid/20180419132804.8317-1-philippe.cornu@st.com

drm/stm: ltdc: add mode_valid()

2018-04-27T08:58:06+00:00

Add mode_valid() function to filter modes according to available pll clock values and "preferred" modes. It is particularly useful for hdmi modes that require precise pixel clocks. Note that "preferred" modes are always accepted: - this is important for panels because panel clock tolerances are bigger than hdmi ones and there is no reason to not accept them (the fps may vary a little but it is not a problem). - the hdmi preferred mode will be accepted too, but userland will be able to use others hdmi "valid" modes if necessary. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Link: https://patchwork.freedesktop.org/patch/msgid/20180417114026.8709-1-philippe.cornu@st.com

drm/stm: ltdc: fix deferred endpoint management

2018-04-27T08:39:45+00:00

When a driver related to one of the endpoints is deferred due to probe dependencies (i2c, spi...) but the other one is ready, ltdc probe continues and the deferred driver will never be probed again. The fix consists in waiting for all deferred endpoints before continuing the ltdc probe. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Link: https://patchwork.freedesktop.org/patch/msgid/20180417113441.8214-1-philippe.cornu@st.com

drm/stm: ltdc: fix warning in ltdc_crtc_update_clut()

2018-04-19T10:24:45+00:00

Fix the warning "warn: variable dereferenced before check 'crtc' (see line 390)" by removing unnecessary checks as ltdc_crtc_update_clut() is only called from ltdc_crtc_atomic_flush() where crtc and crtc->state are not NULL. Many thanks to Dan Carpenter for the bug report https://lists.freedesktop.org/archives/dri-devel/2018-February/166918.html Signed-off-by: Philippe Cornu Reported-by: Dan Carpenter Reviewed-by: yannick fertre Link: https://patchwork.freedesktop.org/patch/msgid/20180410135312.3553-1-philippe.cornu@st.com

drm/stm: ltdc: add user update info in plane print state

2018-04-19T10:15:38+00:00

This patch adds the user update information in frames-per-second into the drm debugfs plane state. Signed-off-by: Philippe Cornu Reviewed-by: Vincent Abriou Link: https://patchwork.freedesktop.org/patch/msgid/20180407213503.30932-1-philippe.cornu@st.com

drm/stm: move enable/disable_vblank to crtc

2018-04-19T10:03:11+00:00

enable/disable_vblank() functions at drm_driver level are deprecated. Move them to the ltdc drm_crtc_funcs structure. Signed-off-by: Philippe Cornu Reviewed-by: Vincent Abriou Link: https://patchwork.freedesktop.org/patch/msgid/20180407212937.30407-1-philippe.cornu@st.com

drm/stm: check pitch and size calculations even if !CONFIG_MMU

2018-02-23T08:37:12+00:00

In all cases we have to check pitch and size calculations to speed up data transfer. Fixes: 21f815bf773c ("drm/stm: drv: Improve data transfers") Signed-off-by: Benjamin Gaignard Tested-by: Philippe Cornu Reviewed-by: Philippe Cornu Link: https://patchwork.freedesktop.org/patch/msgid/20180131080508.14356-1-benjamin.gaignard@linaro.org

drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw

2018-02-08T09:23:32+00:00

Hw older versions support non-alpha color formats derived from native alpha color formats only on the primary layer. For instance, RG16 native format without alpha works fine on 2nd layer but XR24 (derived color format from AR24) does not work on 2nd layer. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180201104243.20726-3-philippe.cornu@st.com

drm/stm: ltdc: add non-alpha color formats

2018-02-08T09:23:22+00:00

ltdc supports natively some color formats with alpha (like ARGB8888, ARGB1555, ARGB4444...). Related non-alpha formats are supported too (ARGB8888->XRGB8888, ARGB4444->XRGB4444...) by adjusting ltdc blending factors. Note: Wayland/Weston requests by default the non-alpha XRGB8888 color format. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180201104243.20726-2-philippe.cornu@st.com

drm/stm: drv: Improve data transfers

2018-01-30T10:45:15+00:00

To optimize data transfers, align pitch on 128 bytes & height on 4 bytes. This optimization is not applicable on hw without MMU. Signed-off-by: Yannick Fertre Signed-off-by: Vincent Abriou Signed-off-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180130104200.21602-1-philippe.cornu@st.com